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refactor deepCopy & deepMerge

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tophf 2017-04-11 16:13:56 +03:00
parent 2086f10af4
commit 279149b8b8
1 changed files with 11 additions and 14 deletions
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25
messaging.js
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@ -186,27 +186,24 @@ function debounce(fn, delay, ...args) {
function deepCopy(obj) { function deepCopy(obj) {
if (!obj || typeof obj != 'object') { return obj !== null && obj !== undefined && typeof obj == 'object'
return obj; ? deepMerge(typeof obj.slice == 'function' ? [] : {}, obj)
} else { : obj;
const emptyCopy = Object.create(Object.getPrototypeOf(obj));
return deepMerge(emptyCopy, obj);
}
} }
function deepMerge(target, ...args) { function deepMerge(target, ...args) {
const isArray = typeof target.slice == 'function';
for (const obj of args) { for (const obj of args) {
if (isArray && obj !== null && obj !== undefined) {
for (const element of obj) {
target.push(deepCopy(element));
}
continue;
}
for (const k in obj) { for (const k in obj) {
const value = obj[k]; const value = obj[k];
if (!value || typeof value != 'object') { if (k in target && typeof value == 'object' && value !== null) {
target[k] = value;
} else if (typeof value.slice == 'function') {
const arrayCopy = target[k] = target[k] || [];
for (const element of value) {
arrayCopy.push(deepCopy(element));
}
} else if (k in target) {
deepMerge(target[k], value); deepMerge(target[k], value);
} else { } else {
target[k] = deepCopy(value); target[k] = deepCopy(value);